You can't find an Umbreon in Pokémon Diamond. You'll have to let it evolve from a Eevee. That only happens by levelling up with happiness at night.
You can find an Eevee at Trophy Garden - Daily Pokémon with a Rarity of 5% or receive it from Bebe at Hearthome City.
Get an eevee from the girl next to the Pokemon center in hearthome, and level it up at night.
well, umbreon can be a boy or girl. but in Pokemon rescues if you're an eevee and evolve into umbreon then it depends on your gender. in the Pokemon pearl and diamond there r mostly boys, well in my game.
You cannot catch an umbreon. The only way to get one is by training an Eevee at nighttime
Yes. All eevees can matewith all other eevees in diamond, pearl, and platinum.
you cant find it. get an eevee, max its happiness, level it up at night, and tada! you have an umbreon!
In Pokemon Emerald you cannot.
Umbreon is a Dark type pokemon.
I don't know anywhere you can technically 'catch' and umbreon. You can catch an Eevee in the game though to evolve into an Umbreon from the Trophy Garden (for Pearl/Diamond/Platinum I believe you can either trade/migrate from Pokemon XD: Gale of Darkness, Pokemon Colluseum, FireRed, LeafGreen, Ruby, Sapphire, or Emerald or with someone else who has one in diamond, pearl, ect. as well)
Abra, Kadabra, Alakazam, Mew, Natu Xatu, Espeon, Umbreon, Ralts, Kirlia, Gardevoir
in the Chroma Ruins on B4F you use Drifblimp to go up and use a pokemon with 3 psy power to open the door umbreon will be in there
You can find Pidey in a Pokemon Outbreak in Pokemon Diamond
well when i was in Pokemon diamond desparate to get a umbreon, i went to veilstone city and went to the meteorites. I gave my eevee a rare candy. But you have to be right next to the meteorite. I tried it and it worked. But also maybe try to do that at night just in case.